Introduction to Worms Flashcards Preview

Parasitology Exam 1 > Introduction to Worms > Flashcards

Flashcards in Introduction to Worms Deck (14):
1

What type of worm is the Acanthocephala?

Thorny headed worm

2

What are the characterstics of the Acanthocephala?

Worms with no digestive system, not fluke/tapeworm/nematode. They have a proboscis that is armed and embeds in SI wall.

3

What kind of worm is Macracanthorhynchus hirudinacus?

Large thorny headed worm

4

What are the DH/IH of Macracanthorhynchus hirudinacus?

Pigs/White grubs

5

How large are the M. hirudinacus? What do they look like?

Up to 35 cm, proboscis armed with 5-6 rows of hooks

6

What is the life cycle of M. hirudinacus?

WRITE HERE

7

What are the clinical signs of M. hirudinacus?

Not many

8

How does one diagnose M. hirudinacus?

Egg on fecal exam

9

How can one control/treat M. hirudinacus?

Sanitation, loperamide or ivermectin are not approved but can be used

10

What is the common name of the Platyhelminthes?

Flatworms

11

What are the characteristics of Platyhelminthes?

Bilaterally symmetrical, dorsoventrally flattened, anterior end has sensory/motor nerves, no body cavity, tegument (living surface for air diffusion), flame cells, highly branched gut

12

How do Platyhelminthes reproduce?

Hermaphrodites, self and cross fertilization, sexual reproduction in DH, asexual reproduction in IH

13

What is the typical life cycle of a fluke?

DH (deer) sheds eggs in feces, mirecidium hatches, infects snail (specific species), sheds cecaria, encyst on grass as metacecaria, has to be ingested by DH (or cattle, sheep, other accidental hosts)

14

What is the life cycle of flukes?

WRITE HERE.